CVS commit: src/sys/arch/i386/stand/lib

["Perry E. Metzger" <perry%netbsd.org@localhost>]

Module Name:    src
Committed By:   perry
Date:           Fri Apr 10 19:41:41 UTC 2009

Modified Files:
        src/sys/arch/i386/stand/lib: bootmenu.c

Log Message:
Check the size of the offered boot.cfg file. Bail out if it is larger
than 32k.

A bootconf file is normally only a few hundred bytes long. If it is
much bigger than expected, we can't load it into an 8086 real mode
segment anyway.

Much more to the point, in the pxeboot case, someone may have
configured their dhcpd to return the filename for the kernel, not
realizing that the filename is now for boot.cfg which didn't used to
be the case. If we try to load the kernel here, thinking it is
boot.cfg by accident, the boot loader will die ignominiously and
without much of an error message, so we don't want to do that.

This needs to be pulled up to 5.0 if 5.0 has all this machinery
-- I'm not sure whether it does.


To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.6 src/sys/arch/i386/stand/lib/bootmenu.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.